Received-SPF: pass (google.com: domain of linux-kernel+bounces-135424-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: =?UTF-8?q?Asbj=C3=B8rn=20Sloth=20T=C3=B8nnesen?= <ast@fiberby.net>
To: "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	Louis Peens <louis.peens@corigine.com>,
	Taras Chornyi <taras.chornyi@plvision.eu>,
	Woojung Huh <woojung.huh@microchip.com>,
	UNGLinuxDriver@microchip.com
Cc: =?UTF-8?q?Asbj=C3=B8rn=20Sloth=20T=C3=B8nnesen?= <ast@fiberby.net>,
	netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Yanguo Li <yanguo.li@corigine.com>,
	oss-drivers@corigine.com,
	Andrew Lunn <andrew@lunn.ch>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Vladimir Oltean <olteanv@gmail.com>,
	Edward Cree <ecree.xilinx@gmail.com>,
	Jamal Hadi Salim <jhs@mojatatu.com>,
	Cong Wang <xiyou.wangcong@gmail.com>,
	Jiri Pirko <jiri@resnulli.us>
Subject: [PATCH net-next 4/6] net: prestera: flower: validate control flags
Date: Mon,  8 Apr 2024 13:09:22 +0000
Message-ID: <20240408130927.78594-5-ast@fiberby.net>
In-Reply-To: <20240408130927.78594-1-ast@fiberby.net>
References: <20240408130927.78594-1-ast@fiberby.net>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add check for unsupported control flags.

Only compile-tested, no access to HW.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
---
 drivers/net/ethernet/marvell/prestera/prestera_flower.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_flower.c b/drivers/net/ethernet/marvell/prestera/prestera_flower.c
index 8b9455d8a4f7a..075aed847913d 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_flower.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_flower.c
@@ -229,6 +229,10 @@ static int prestera_flower_parse(struct prestera_flow_block *block,
 
 		flow_rule_match_control(f_rule, &match);
 		addr_type = match.key->addr_type;
+
+		if (!flow_rule_no_control_flags(match.mask->flags,
+						f->common.extack))
+			return -EOPNOTSUPP;
 	}
 
 	if (flow_rule_match_key(f_rule, FLOW_DISSECTOR_KEY_BASIC)) {
-- 
2.43.0